MATTER AROUND US MADE BY: ANUJ GUPTA CLASS:IX ROLL NO:6
PROPERTIES OF ALL OBJECTS : They take up space They have massMass is how much there is of an object. It is related to how much something weighs, but mass and weight are two different things.
Objects that take up spaceand have mass are calledmatter.All matter is made up of lotsof tiny particles that are toosmall to be seen by the eye.
S OME EXAMPLES OF MATTER? People Houses Trees CarsComputers Paper Air Pencils Water EVERYTHING
PHYS ICAL PROPERTIES Physical properties refer to thecharacteristics of an object that can be seen without changing how that object looks.Some examples of physical properties are: Shape Volume Movement of particles Spacing of particles
PHYS ICAL PROPERTIES When we describe matter, we use the physical properties to talk about the states of matter. For example, if I was describing a solid I would say that ALLsolids have a definite shape and a definite volume.Notice I didn’t say that they are hard. Ididn’t say that because not ALL solids are hard. Think about your hair. Is it hard?
THE S TATES OF MATTER SolidsEx. Rocks, chairs, clothes, paper, ice, etc. Liquids Ex. Water, soda, milk, juice, etc. GasesEx. Oxygen, helium, carbon dioxide, etc.
S OLIDSWays to describe solids:ALL solids have a definite shape ALL solids have a definite volume The particles in ALL solids are packed closely together The particles in ALL solids vibrate in place.
FINDING VOLUME OF A S OLID There are two ways to find the volume of a solid. You must determine the type of the solid before you can find the volume.The two types of solids are rectangular solids and irregular solids.
VOLUME OF RECTANGULAR S OLIDSAn example of a rectangular solid would be a book. A book has a length, width, and volume. To calculate the volume of a book, you would first measure the length, width, and height. Then, you multiply those values together. Length x Width x Height = Volume
VOLUME OF AN IRREGULAR S OLIDTo find the volume of an irregular solid, you will need to use water displacement with a graduated cylinder. Water displacement means that you would put water in the graduated cylinder. Then, drop the solid into the cylinder. Then however much the water rose would be the volume of the solid.Volume of irregular solid = new water level – original water level.
LIQUIDS Ways to describe liquids:ALL liquids have a definite volumeALL liquids take the shapeof the container they are placed in.The particles in liquids are relatively spread out. The particles move apartfrom each other and flow from place to place
FINDING VOLUME OF A LIQUID To find the volume of a liquid, scientists use a tool called a graduated cylinder.A graduated cylinder is similar to a measuring cup in that it shows measurements in increments on the outside of the container.
GAS ESWays to describe gases: ALL gases have no definite volume. ALL gases take the shape oftheir container, filling all of the available space. The particles in a gas are spread out in the available space. The particles move easily through the available space.